Type-writing machine.



No. 890,867. PATENTED JUNE 16, "1908.

J. 0. MoLAUGHLIN.

TYPE WRITING MACHINE.

APPLICATION FILED JAILZ, 1908.

a No. 890,867.

Machines, of i' UNITED STATES PATENT oEEroE.

JOHN C. MGLAUGHLIN,

OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO UNDERWOOD TYPE- WRITER coMPANnoF NEW YORK, N. Y., A CORPORATION OF NEW JERsEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented June 16, 1908.

To all whom 'it'mag concern:

Be it known that 1, JOHN C. MOLAUGHLIN, a citizen of the United States, residing in Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful 1m rovements in Type-Writing liich the following is a specification.

This invention relates to the paper feeding devices ofty ewritingmachines, and particularly to mac iines intended for use in writing bills, in which a long record sheet and carbon sheet remain in the machine, whereby rec-' ords of several successive bills are made one after another upon the record-sheet.

According to one method of writing bills and records, the usual pressure rolls are cast off after a bill is written, to permit the written bill to be withdrawn, and a fresh bill insertedand adjusted around to the printing line; and generally in racticing this method, the record sheet is ma e much wider than the bill sheets, so that the side edges of thereoord' sheet may be caught by the usual front paper guiding fingers, whereby the record sheet and carbon are held stationar during the manipulation of the bill sheets, t e latter being sufficiently narroizv to pass between said guiding fingers. In practicing this and other methods, it is necessary forthe operator to remember always to advance the record sheet after completing a bill, so that the first line of the succeeding bill will not be imprihted upon the last written line on the record sheetthat is, so as to leave a space between records.

The principal object of my invention is to relieve the operator of the necessity of remembering to space the record sheet for this purpose, and to avoid the liability of annoyance caused by Writing one line upon top of another on the record sheet.

In carrying out my invention, I provide in addition to the usual linespacing mechanism a device whereby, when the operator casts ofi the usual pressure rolls for the purpose of removing the written bill to insert a fresh bill, the platen is automatically advanced to leave the desired spacing between bills on the record-sheet.

In the preferred form of the invention, a line-spacing lever, separate from the usual lever, is mounted upon the platen frame, and by means of a pawl turns a ratchet wheel,

which is connected to the platen. This lever also has means to cast off the ressure rolls; and therefore, the operator w en releasing the bill sheet, necessarily advances the platen for the pur ose specified. The usual key for releasing t e pressure rolls is also employed so as to permit releasing of the paper without feedin' v the platen.

. In the accompanying drawings, Figure 1 is a side elevation partly in section of the platen frame of an Underwood front strike writing. machine, embodying my improvements; the parts being shown in normal positions, to permit free rotation of the platen in either direction. Fig. 2 is a sectional rear view of the record spacing lever as having been swung forwardly to advance the platen and to come into contact with the pressure-roll releasing devices. lever completed, the rolls being released from the platen. Figs. 5 to 9 are diagrammatic views of the successive steps in the operation of said lever, to illustrate the relation of the pawl thereon to the ratchet wheel during the entire forward stroke of the lever.

Ty e bars 1 strike upon the front side of a cylin rical platen 2, which is mounted by means of an axle 3 in the ends 4 of a platen frame in the usual manner. Front and rear rolls 5, 6 run upon the under side" of the platen, being mounted upon shafts 7, 8, which 111 turn are carried upon spring-pressed arms 9, l0, pivoted u on springs being in icated diagrammatically at 12,13,Fi .4.

The rol s are releasable by means of a key 14 provided upon a lever 15 connected by a link 16 to a crank 17 rovided upon the end of a rock shaft 18, w ich is provided with cams or Hats 19 upon its'c posite sides to engage fingers 20, 21 forme upon the arms 9, 10. The fingers normally occupy said rekey, the shaft 1 8 is given aquarter turn, and the fingers forced apart as at Fig. 4., thereby releasing the pressure rolls from the platen.

It will be seen that at Fig. 4 the fingers rest upon the cylindrical peri hery of the shaft 18, and are hence locked so that the rolls are mechanically maintained away from the platen, thus permitting manipulation of the ill sheets, the fresh sheet bem slip ed around between the usual curve plate 22 and the record sheet, which during this operation is held against the platen by several parts seen at Fig. 1. Fig. 3 shows Fig. 4 shows the movement of said a common shaft 11, the

guiding cesses, as at Fig. 3; but upon depressing said v in the Fig. 1 position, the platen maybe ro 1 tated in the usual manner, vas by means of the usual pawl 25 andratehet' wheel 26 regularly provided at the other'end of the platen,

Fig. 2. 'As so far described, the parts are 111,

common use upon-said Underwood type,- writing machine.

After completin Operator instead 0 depressing the usual key 14, pulls forwardly a lever 27, pivoted at 28 upon the end of the platen frame, and nor- 'mally held back by a spring 29 against the' stop 30, which may be adjusted to different.

positions and secured by screws 31 passing throu h a slot 32 in the stop plate 33. This lever as a art 34 to en age and bear'down a in or ro 35 provide upon the lever 15 w ich releases'the pressure rolls 5, 6, so that by a full forward swing of the lever 27, the rolls 5, 6, are released, asf'at Fig.4.

rior to the roll-releasing operation however, a pawl36, pivoted upon an arm 37 of the lever 27, engages atooth 38 of a ratchet wheel 39,- and rotates the latter to ether with the axle 3 upon which it is secure by means of a hub '40, thereby advancing the platen 2.

Thus by a single stroke of the lever 27, the

platen-1s advanced tofeed the record-sheet up to receive anew record, and the rolls 5, 6 are cast ofi to release the written bill. The spring 29 returns the lever to normal position, andafter a new bill'is inserted, the re- 40 lease key 14 may be raised to cause the rolls 5, 6 to act again.

As seen at Figs. 1 and 5, the awl 36 is normally out of engagement with t e ratchet wheel 39, to permit rotation of the platen in either' direction. A sprin 41 tends constantly to press the nose 0 the pawl downward or towards the axis- 3 of the ratchet wheel 39. The awl is provided with a projecting in 42 which rides upon the to edge of a gui e plate 43 secured upon the si e face of the platen 'frame end- 4. At the initial portion of the forward stroke of the lever 27, the pin 42 rides down an incline 44 in said plate 43 to permit the nose of the pawl to engage the ratchet tooth 38, Fig. 6. The pawl then drives or advances the ratchet tooth, and hence the ratchet wheel and platen, for a distance preferably equal to two ordinary line spaces, whereupon the pin 42 engages an I incline 45 formed upon the plate43, whereby the awl is tri ped out of engagement with the rate et whee 39. This is done at about the time that the release'of the rolls 5, 6 begins, so that rotation of the "platen is completed while said rolls are holding the sheets therethe writing of a billfthe spacing devices there or, of a pressure roll to against. Thereafter and during the completion of the; forward stroke of the lever 27, the pin 42 in the pawl rides idly along thetop edge 46 of the plate 43, whereby the pawl is maintained out 'of enga ement with the ratchet wheel so that the p aten is stationary during'the'roll-releasin operation. Thus it will be seen that a sing e stroke of the lever 27 advances the laten, releases the rolls 5, 6 r and efiects the locking of the-latter away from the platen 'to ermit the necessary manipulation of the hi1 sheets. i Variations may be'resorted to within the scope of the invention, and portions of the improvements may beusedwithout others aving thus described my invention, I claim:- 1 g 1. In a typewriting machine, the combination with a revoluble laten and regular line- .85 run upon the platen, and-anauxilia1ymechanism for rotating the' laten between-entries, said auxiliary, me'c anismincluding'a lever, and means oper ted bysaid lever't o release said pressure re 1 whilethe platen re- .90 mains stationary.

2. In a typewriting machine, the combina-. tion with a revoluble platen, of a line spacing wheel connected thereto, a lever. and pawl to advance said-wheel and platen, a pressure roll to run u on the platen, and means Opel? atedb said ever to release said res'sureroll 7 after t e platen is advanced by t e lever. :3. Inal yp writing machine, the'combin'ation witha revoluble laten, a ratchet wheel. connected thereto, an thereon, of. a lever, a' awl operated b -the lever to drive said" ratc et' wheel and p aten,, means for disengaging the pawl from the i ratchet wheel upon t e completion of the a pressure roll to run' laten movement, and means operated by the ever during the .final portion of -its stroke. 1 after such disengagement to cast off said pressure roll.

. 4. In a typewriting machine, the combina: tion with a revoluble laten and a pressure roll to run thereon, o a ratchetwlieel "con-- nected do said platen, of a lever, a pawl normally out of engagement with said ratchet wheeland movable by said lever .to engage and rotate said ratchet wheel, means for enabling said lever during the final portion of its imtial stroke to release said pressure roll, and means for efiecting disconnection of the pawl from the ratchet .wheel during the roll releasing action of the lever. 5. In a typewriting machine,-the-combina. tion with a revoluble platen and a pressure roll to run thereon, of a lever, a pawl pivoted thereto, a ratchet wheel connected to the platen, means normally holding said pawl away from saidratchet wheel, means operated during the initial lever movement to vdisconnect the pawl from the ratchet wheel after turning the platen, and means turned by the 130 eeaeer initial stroke of.-the lever after such, disconnection to rel-ease the pressure roll. N 6. in a typew iting machine, the combination with arevoluhle platenjand'a pressure.

roll to run thereon, of a lever, a pawl pivoted to. the lever, a returningv spring'for said lever, a tri normally engaged by said-pawl, whereby tile latter is normally held away from the ratchet wheeh'a second trip to disengage the pawl from theratchet wheel after the platen is turned, and means operable'by the lever afterfsuch disengagement and during the latter part of the'initial-stroke of the lever to release said pressure roll.

nation with a platen and ,7 ,1 in a typew 'ting machine, the combination with a platenandregn-lar linesspacing devices therefor, of a'pressure roll to run upon the'platen, a lever to'release the pressure roll, and an auxiliary 'mechanismjoper- 20.

ated by saidlever to eiiect'a line-spacing movement of the platen while said, roll is pressing thereon.

8. In a typewritin machine, 3 the combi nation with arevolu le-plate'nand a ressure rollto run thereon,'oi means-to recase the pressure roll, and means operated by said releasiiig ineans to effect a artial rotation of the platen; means being. a so provided to release the pressure roll independently of the platen rotatingmeans. r

9. in a typewr'J-ing,maehine, the. eomhination with a revoluhle platen, and a ressure roll to run thereon, er? a finger piece aving means to release h lever having means l3 sure rolland eir'ect a platen; said finger p dependently of said 19*] 1G. ln'a typewriting r roll, and a elease the presrotation of the operable 1a aehine, the comhi ,ns cooperating therewith to the paper, of means connccted the platen and tothe paper feeding means to simnltaneously'advance the platen and release the paper, aid means to release the paper with-ant advancing the platen.

l1. 1 typewriting machine, the combination n. a platen and meanscooperati g therewith to teed the paper, of means connected to the platen and to the paper t'eeding means to simultaneously advance the platen and release the paper," means to release the paper without advancing the platen, and means to advance the platen.

without releasing the paper.

12. In a typewriting machine, the. combination with a revoluble platen and ressure rolls t'o run thereon, of a lever, an means connected thereto to advance the platen and release said rolls and lock the rolls away from the platen.

13. In a typewriting machine, thecombi nation with a revoluble platen, of a lever, a

ratchet wheelconnected to the platen, a pawl o erable by said lever to turn the ratchet w lieel and platen during the initial portion of the stroke of the lever, and means to trip said pawl away from the ratchet Wheel, pressure rolls to run uponthe platen, and means operable by said lever after the trip: ping of said pawl to release said rolls from the platen. I 1a. "In. a typewritin machine, the combi-' nation with a revolub e platen, of a lever, a

, ratchet wheel connected to the platen, a pawl ,o erable by said lever to turn the ratchet w eel and platen during the initial portion of the stroke'of the lever, and means to trip said pawl away from the ratchet wheel, pressure rolls'to run 11 on the platen, and means operable by said ever aftm' the tripping or said awl to release said rolls from the platen and o'ck them in released positions 155111 a typewriti machine, the combination with a revolub eplaten, of a lever, a ratchetwheel connected to the platen, a pawl operable by said leverl-to turnjthe ratchet wheel and platen during the initial .portion of the stroke of the lever, and means-to trip said pawl away from the ratchet Wheel, pressure rolls to run upon the laten, means operable by saidlever aftertt e tri ping of said 

